Long-Term Debt

Long-term debt consisted of the following (in thousands):



	December 31, 2019			September 30, 2019
Industrial development revenue bonds	$	800		$	1,200
Less: current portion	(400		)	(400		)
Total long-term debt	$	400		$	800

U.S. Revolver

On September 27, 2019, we entered into an Amended and Restated Credit Agreement with Bank of America, N.A. (the " "U.S. Revolver"), which replaced our prior credit agreement. The U.S. Revolver is a $75.0 million revolving credit facility, that is available for both borrowings and letters of credit and expires September 2024. As of December 31, 2019, there were no amounts borrowed under this facility and letters of credit outstanding were $13.4 million. There was $61.6 million available for the issuance of letters of credit and borrowings under the U.S. Revolver as of December 31, 2019.

We are required to maintain certain financial covenants, the most significant of which are a consolidated leverage ratio less than 3.0 to 1.0 and a consolidated interest coverage ratio of greater than 3.0 to 1.0. Additionally, we must maintain a consolidated cash balance of $30 million at all times. The U.S. Revolver also contains a "material adverse effect" clause which is a material change in our operations, business, properties, liabilities or condition (financial or otherwise) or a material impairment of our ability to perform our obligations under our credit agreements. As of December 31, 2019, we were in compliance with all of the financial covenants of the U.S. Revolver.

The U.S. Revolver allows the Company to elect that any borrowing under the facility bear an interest rate based on either the base rate or the eurocurrency rate, in each case, plus the applicable rate. The base rate is generally the highest of (a) the federal funds rate plus 0.50%, (b) the Bank of America prime rate or (c) the London Interbank Offered Rate ("LIBOR") plus 1.00%. The applicable rate is generally a range from (0.25)% to 1.75% depending on the type of loan and the Company's consolidated leverage ratio.

The U.S. Revolver is collateralized by a pledge of 100% of the voting capital stock of each of our domestic subsidiaries and 65% of the voting capital stock of each non-domestic subsidiary. The U.S. Revolver provides for customary events of default and carries cross-default provisions with other existing debt agreements. If an event of default (as defined in the U.S. Revolver) occurs and is continuing, on the terms and subject to the conditions set forth in the U.S. Revolver, amounts and letters of credit outstanding under the U.S. Revolver may be accelerated and may become immediately due and payable.

Industrial Development Revenue Bonds

We borrowed $8.0 million in October 2001 through a loan agreement funded with proceeds from tax-exempt industrial development revenue bonds (Bonds). These Bonds were issued by the Illinois Development Finance Authority and were used for the completion of our Northlake, Illinois facility. Pursuant to the Bond issuance, a reimbursement agreement between us and a major domestic bank required an issuance by the bank of an irrevocable direct-pay letter of credit (Bond LC), as collateral, to the Bonds’ trustee to guarantee payment of the Bonds’ principal and interest when due. The Bond LC is subject to both early termination and extension provisions customary to such agreements, as well as various covenants, for which we were in compliance at December 31, 2019. While the Bonds mature in 2021, the reimbursement agreement requires annual redemptions of $0.4 million that commenced on October 25, 2002. A sinking fund is used for the annual principal payment. The Bonds bear interest at a floating rate determined weekly by the Bonds’ remarketing agent, which was the underwriter for the Bonds and is an affiliate of the bank. This interest rate was 1.79% as of December 31, 2019.